I could be wrong, but I think

 

• static friction is resistance to movement when in contact with the collision object (cloth or figure) and no movement is currently happening
• dynamic friction is resistance to movement when in contact with the collision object (cloth or figure) and movement is already in progress

This is a real-world phenomenon - friction is higher for surfaces not moving past each other. I remember doing this experiment in high school physics. A block was placed on an inclined plane. We increased the slope until the block started to move. From the angle needed, you could calculate the static friction - i.e. how much force was necessary to cause movement to begin. Until the force was above the static friction, the block would not move.

Then we measured how long it took to reach the end of the plane. From this we could calculate the dynamic friction.

The dynamic was always less than the static.

A qualitative test is easier and requires no math. Incline the plane more until the block moves. Then decrease the inclination slightly. Even though that decreased the down force, the block did not stop. This indicates that the sliding friction was less.

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